hi! I have a 45-70, a 7.62x54r, and hope to get a 9.3x62 next year, I am hoping for some suggestions on powders that would work well for all 3 calibers. so far I have considered imr4895, and Winchester 760. are these good choices, and does anyone have any better ideas? I know I am thinking way ahead on the 9.3x62 but I am wanting to load up on powder soon, as in before I get it, so I figure it's just best to plan ahead. thanks! Travis